#!/bin/bash

 

# Simple print cpu topology

# Author: kodango

 

function get_nr_processor()

{

    grep '^processor' /proc/cpuinfo | wc -l

}

 

function get_nr_socket()

{

    grep 'physical id' /proc/cpuinfo | awk -F: '{

            print $2 | "sort -un"}' | wc -l

}

 

function get_nr_siblings()

{

    grep 'siblings' /proc/cpuinfo | awk -F: '{

            print $2 | "sort -un"}'

}

 

function get_nr_cores_of_socket()

{

    grep 'cpu cores' /proc/cpuinfo | awk -F: '{

            print $2 | "sort -un"}'

}

 

echo '===== CPU Topology Table ====='

echo

 

echo '+--------------+---------+-----------+'

echo '| Processor ID | Core ID | Socket ID |'

echo '+--------------+---------+-----------+'

 

while read line; do

    if [ -z "$line" ]; then

        printf '| %-12s | %-7s | %-9s |\n' $p_id $c_id $s_id

        echo '+--------------+---------+-----------+'

        continue

    fi

 

    if echo "$line" | grep -q "^processor"; then

        p_id=`echo "$line" | awk -F: '{print $2}' | tr -d ' '`

    fi

 

    if echo "$line" | grep -q "^core id"; then

        c_id=`echo "$line" | awk -F: '{print $2}' | tr -d ' '`

    fi

 

    if echo "$line" | grep -q "^physical id"; then

        s_id=`echo "$line" | awk -F: '{print $2}' | tr -d ' '`

    fi

done < /proc/cpuinfo

 

echo

 

awk -F: '{

    if ($1 ~ /processor/) {

        gsub(/ /,"",$2);

        p_id=$2;

    } else if ($1 ~ /physical id/){

        gsub(/ /,"",$2);

        s_id=$2;

        arr[s_id]=arr[s_id] " " p_id

    }

}

 

END{

    for (i in arr)

        printf "Socket %s:%s\n", i, arr[i];

}' /proc/cpuinfo

 

echo

echo '===== CPU Info Summary ====='

echo

 

nr_processor=`get_nr_processor`

echo "Logical processors: $nr_processor"

 

nr_socket=`get_nr_socket`

echo "Physical socket: $nr_socket"

 

nr_siblings=`get_nr_siblings`

echo "Siblings in one socket: $nr_siblings"

 

nr_cores=`get_nr_cores_of_socket`

echo "Cores in one socket: $nr_cores"

 

let nr_cores*=nr_socket

echo "Cores in total: $nr_cores"

 

if [ "$nr_cores" = "$nr_processor" ]; then

    echo "Hyper-Threading: off"

else

    echo "Hyper-Threading: on"

fi

 

echo

echo '===== END ====='
